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ARS Home » Midwest Area » East Lansing, Michigan » Sugarbeet and Bean Research » Research » Publications at this Location » Publication #381395
Research Project: Utilizing Genetic Diversity within Phaseolus vulgaris to Develop Dry Beans with Enhanced Functional Properties

Location: Sugarbeet and Bean Research

Title: Climbing bean breeding for disease resistance and grain quality traits

Author
item PORTILLA BENAVIDES, ANA - International Center For Tropical Agriculture (CIAT)
item MAYOR-DURAN, VICTOR - International Center For Tropical Agriculture (CIAT)
item BUENDIA, HECTOR - International Center For Tropical Agriculture (CIAT)
item BLAIR, MATTHEW - University Of Tennessee
item Cichy, Karen
item RAATZ, BODO - International Center For Tropical Agriculture (CIAT)

Submitted to: Legume Science
Publication Type: Peer Reviewed Journal
Publication Acceptance Date: 8/13/2021
Publication Date: 9/2/2021
Citation: Portilla Benavides, A., Mayor-Duran, V., Buendia, H., Blair, M., Cichy, K.A., Raatz, B. 2021. Climbing bean breeding for disease resistance and grain quality traits. Legume Science. Article e122. https://doi.org/10.1002/leg3.122.
DOI: https://doi.org/10.1002/leg3.122

Interpretive Summary: Common bean (Phaseolus vulgaris) is grown in two growth types, bush and climbing beans. Climbing beans can have 2-3 times the yield as bush types, while requiring more manual labor, making them very suitable for usual living conditions of poor land limited smallholder farmers. The goal of this research was to develop new climbing beans through plant breeding that combine disease resistance and good end-use and nutritional quality characteristics. In this study new climbing bean populations were generated to combine high seed iron and resistance to viral (bean common mosaic necrotic virus) and fungal (anthracnose) pathogens. Double and triple crosses between parents with virus and anthracnose resistance, high iron and good agronomic traits were employed. In trials in Colombia lines were identified that combined disease resistance with good seed yield and high seed iron. The lines were also evaluated for canning quality and superior lines were identified. These results show the genetic potential of the lines which are now being tested in target regions to be delivered to smallholder farmers.

Technical Abstract: Common bean (Phaseolus vulgaris) is grown in two growth types, bush and climbing beans. The latter are preferred in several regions in East and Southern African as well as in Latin America (dominant in Rwanda and Colombia), due to higher yields and resilience. Common bean production is reduced by several pests and diseases. Bean common mosaic virus (BCMV), is the most common and destructive poty-virus affecting bean production worldwide and Anthracnose, caused by the fungus Colletotrichum lindemuthianum, can cause yield losses as high as 95% in susceptible cultivars. Further important traits in common bean are high micro mineral contents to alleviate malnutrition and grain quality traits such as the canning quality of bean varieties, which is important for farmers to access the processing market. In this study new climbing bean populations were generated (coded ENF/CGA) to combine high seed iron (Fe) and diseases resistance. Double and triple crosses between parents with virus and anthracnose resistance, high Fe and good agronomic traits were employed. In trials in Darien and Popayan lines were identified that combine BCMNV and Anthracnose resistance with yields above 4000 kg/ha. Evaluations validate the usefulness of SNP markers tagging the genes bc-3 and I for BCMNV and Co-3 for anthracnose as a selection tool for field resistance. These results show the genetic potential of the lines which are now being tested in target regions to be delivered to smallholder farmers.